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Unformatted text preview: 1. DNA was composed of nucleotides. Each nucleotide contained: Phosphate (P) The 5-carbon sugar, deoxyribose One of four different nitrogen-containing bases Two were double ring purines Adenine Guanine Two were single ring pyrimidines Thymine Cytosine The sugar phosphate formed a backbone with one of the four bases attached to the side of the sugar....
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- Spring '10